(iv) APU: in respect of the APU, an amount equal to the APU
 Supplemental Rent Rate for each Flight Hour operated by
 the APU during that calendar month ("APU Supplemental
 Rent"); provided, however, Lessee shall have no
 obligation to make any payment of APU Supplemental Rent
 in respect of any period during which the APU installed
 on the Aircraft is subject to a maintenance cost per
 hour agreement or similar arrangement with the APU
 manufacturer or Agreed Maintenance Performer so long as
 (x) such agreement or arrangement is approved in advance
 (i.e., before the enrollment of the APU installed on the
 Aircraft in any such agreement or arrangement) in
 writing by Lessor (such approval not to be unreasonably
 withheld), and (y) in the event that the APU installed
 on the Aircraft is enrolled in any such agreement or
 arrangement before Lessor approves such agreement or
 arrangement, or in the event that any APU enrolled in
 any such agreement or arrangement is to be installed on
 the Aircraft before Lessor approves such agreement or
 arrangement, then Lessee shall pay and continue to pay
 APU Supplemental Rent in accordance with this subclause
 for all periods prior to the time at which Lessee
 obtains Lessor's written approval (which approval shall
 not be unreasonably delayed) of the applicable agreement
 or arrangement (if ever); and

 (v) LANDING GEAR: in respect of the Landing Gear, an amount
 equal to the Landing Gear Supplemental Rent Rate,
 pro-rated on a per diem basis, if applicable, for any
 calendar month which falls partially within the Term and
 partially outside the Term ("Landing Gear Supplemental
 Rent");

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